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| Number | Title | Issue Date |
| 8179926 | Mobile communication system, and base transceiver station apparatus and mobile station apparatus used in mobile communication system A phase error detector in a base transceiver station detects a phase error caused by a Doppler shift in a received wave from a mobile station. A phase rotator rotates a phase of a transmission symbol in a base band region so as to cancel the Doppler shift, which occ... | 05/15/2012 |
| 8170067 | Memory system with calibrated data communication A system includes a first integrated circuit device and a second integrated circuit device. The first device transmits a data sequence to the second integrated circuit device, and the second device samples the data sequence to produce receiver data. The second devic... | 05/01/2012 |
| 8160112 | Buffering a media stream An apparatus and method of buffering a media stream is provided. The method may comprise receiving a plurality of IP packets of the media stream, each packet providing a fragment of a portion of the media stream. Thereafter, the portion of media stream may be buffer... | 04/17/2012 |
| 8149884 | Jitter buffer control method and communication apparatus Disclosed is an apparatus comprising a jitter buffer that writes and reads packets transmitted via a packet network from a transmission node, a clock correction unit that obtains an inter-packet jitter, based on difference information between time stamp information ... | 04/03/2012 |
| 8149883 | Data receiving device, data receiving method, and computer product In a receiving device, time information is separated from received multimedia data, a first difference is calculated between two consecutive pieces of time information, and a second difference is calculated between reception timings of the two consecutive time infor... | 04/03/2012 |
| 8130797 | Method and apparatus for multiplexing/demultiplexing multi-programs A multi-program multiplexing/demultiplexing method and apparatus for preventing MPEG jitters from being generated in a digital broadcast, and a multi-program receiver using the multi-program multiplexing/demultiplexing apparatus are provided. The multi-program multi... | 03/06/2012 |
| 8089992 | Systems and methods to measure the performance of a de-jitter buffer Systems and methods to measure the performance of a de-jitter buffer are disclosed. In a described example, a method to measure adaptive de-jitter buffer performance includes transmitting a known audio signal via a plurality of packets over a packet-based network, r... | 01/03/2012 |
| 8064486 | Determination of channel latency within a round-trip path The present invention provides a system, apparatus, and method for determining latency differences in channels within a link at a single test site. In particular, the method allows for a single transmitting device to determine distinct latency differences on both tr... | 11/22/2011 |
| 8040923 | Communication methods and apparatuses Communication methods and apparatuses are provided. ... | 10/18/2011 |
| 8036248 | Method, apparatus, and system for automatic data aligner for multiple serial receivers A method, apparatus and system for employing an automatic data aligner for multiple serial receivers in serial link technologies is provided. In one embodiment, converting a transmission data path of a single bit into a parallel bit via a data aligner, wherein the d... | 10/11/2011 |
| 8031747 | Apparatus and method of compensating for clock frequency and phase variations by processing packet delay values An apparatus and method are described for compensating for frequency and phase variations of electronic components by processing packet delay values. In one embodiment, a packet delay determination module determines packet delay values based on time values associate... | 10/04/2011 |
| 8023534 | Signal processor latency measurement Systems and methods that measure the delay (latency) through a digital processor or circuit. A waveform generator outputs a primary (chirp) signal to the digital circuit, along with an auxiliary pulse signal to a delay circuit. The auxiliary signal corresponds to a ... | 09/20/2011 |
| 7983309 | Buffering time determination This invention relates to methods, a computer program product and apparatuses in the context of frame buffering. A buffering time for one or more frames received by a frame buffer is determined based on a specific buffering time associated with a specific frame and ... | 07/19/2011 |
| 7970020 | Terminal having plural playback pointers for jitter buffer A terminal (30, 30B) receives transmissions in a form of a media stream. The terminal comprises a jitter buffer (40) which receives data comprising the media stream and a buffer manager (80). The buffer manager (80) makes a selection betw... | 06/28/2011 |
| 7957426 | Method and apparatus for managing voice call quality over packet networks The present invention relates to an apparatus and method for maintaining voice call quality over a packet network by providing optimal de jitter buffer depth and rate of change of depth. Buffer depth and rate of change of buffer depth may be initially determined by ... | 06/07/2011 |
| 7944949 | Multiservice system and method for packet and time division multiplexed transport A system and method are presented for providing packet and time division multiplex (TDM) services in a data communication interface. The method accepts packets at a first rate over a packet interface, and transfers time-sensitive data in the packets as packet data u... | 05/17/2011 |
| 7936794 | Clock management between two end points Clock correlation can be achieved, for example, utilizing the RTP stream between a sender and receiver by determining a baseline at the start of, for example, a communication. This baseline is derived as a point in time from an arriving packet and represents a point... | 05/03/2011 |
| 7924889 | Method for transmitting packets in a transmission system Methods for transmitting first packets encapsulated in second packets in a transmission system in which part of the first packets contain a first timing reference for synchronization of a receiver clock and at least part of said second packets contain a second timin... | 04/12/2011 |
| 7920600 | Information processing apparatus In an information processing apparatus such as digital cellular phone with a camera, a frame extracting portion extracts audio data in frames in accordance with a codec scheme. A packet creating portion creates an RTP packets based on the audio data in frames. A pos... | 04/05/2011 |
| 7916761 | Methods and apparatus for adding latency and jitter to selected network packets A method for adding latency and jitter to a number of selected packets transmitted between end systems within a network of end systems is described. The method includes receiving a packet identifier, the packet identifier indicating a selected packet to which latenc... | 03/29/2011 |
| 7916760 | Packet sending apparatus and packet transmission system A packet sending apparatus that improves packet transmission quality by preventing loss of packet information, while minimizing a reduction in transmission rate. A clock frequency deviation correction calculation section calculates a valid packet sending period in w... | 03/29/2011 |
| 7894488 | Apparatus and method for monitoring quality metrics associated with a wireless network An apparatus and method for measuring metrics associated with a wireless network is described. One embodiment includes capturing, at a capturing device, a packet transmitted in a wireless network. A congestion indicator is calculated based on a delay associated with... | 02/22/2011 |
| 7894489 | Adaptive play-out buffers and adaptive clock operation in packet networks Methods and apparatus for a play-out buffer that may adjust offsets between clocks of two ends of a network link with an adaptive play-out buffer and adaptive clock control. The play-out buffer is a circular jitter buffer that permits the absorption of a frequency o... | 02/22/2011 |
| 7864816 | Integrated circuit for network delay and jitter testing An integrated circuit having a corresponding method comprises one or more ports to transmit and receive packets of first data; and a forwarding engine to transfer the packets of the first data between the ports; wherein at least one of the ports comprises a packet g... | 01/04/2011 |
| 7852882 | Jitter buffer adaptation based on audio content A system and method for discarding or inserting audio frames in a jitter buffer is described. The system and method provides improved audio quality as compared to conventional jitter buffer management systems. In one embodiment, buffer control logic determines wheth... | 12/14/2010 |
| 7826495 | Method, Ethernet device and Ethernet for clock synchronization The present invention discloses a method and Ethernet device for clock synchronization, a method for clock synchronization in an entire Ethernet, and the relevant Ethernet. The method for clock synchronization in an Ethernet device includes: the PHY layer unit of th... | 11/02/2010 |
| 7826494 | System and method for handling audio jitters Presented herein are system(s) and method(s) for handling audio jitters. In one embodiment; there is presented a method for decoding an audio signal. The method comprises receiving a portion of the audio signal, the portions of the audio signal associated with a tim... | 11/02/2010 |
| 7822074 | Synchronization between uncoordinated time division duplex communication networks An apparatus and method for synchronization between uncoordinated Time Division Duplex (TDD) communication networks includes a first step (300) of measuring an interference level on channels available to a base station. A next step (302) includes choos... | 10/26/2010 |
| 7822072 | Clock filter dispersion Disclosed are a method and system to estimate the maximum error in the clock offset and skew estimation between two clocks in a computer system. The method comprises the steps of obtaining a first set of data values representing a forward delay between the first and... | 10/26/2010 |
| 7822073 | Packet flow side channel A packet flow side channel encoder and decoder embeds and extracts a side channel communication in an overt communication data stream transmitted over a network. The encoder selects more than one group of related packets being transmitted on the network, relates a p... | 10/26/2010 |
| 7817677 | Method and apparatus for processing packetized data in a wireless communication system Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switch communications. The de-jitter buffer methods and apparatus presented avoid playback of underflows while balancing end-to-end delay. In one example, the de-jitter buffer is recalculated at the begin... | 10/19/2010 |
| 7817678 | Method and apparatus for time alignment along a multi-node communication link A network entity, which comprises an input configured to receive from an upstream network entity a stream of first media data elements; an output configured to release towards a downstream network entity a stream of second media data elements; a processing engine co... | 10/19/2010 |
| 7792157 | Method, system and device for clock transmission between sender and receiver Embodiments of the present invention provide a method, system and device for clock transmission between a sender and a receiver. The sender generates clock information of a clock to be sent relative to a system clock and sends a data packet containing the clock info... | 09/07/2010 |
| 7787500 | Packet receiving method and device In a packet receiving method and device which convert a voice packet received into a voice, a receiving packet buffer temporarily stores a voice packet received; a plurality of parameter information monitors respectively determine different buffer adjustment values ... | 08/31/2010 |
| 7778286 | Methods and systems for DSP-based receivers Digital signal processing based methods and systems for receiving data signals include parallel receivers, multi-channel receivers, timing recovery schemes, and, without limitation, equalization schemes. The present invention is implemented as a multi-path parallel ... | 08/17/2010 |
| 7773636 | Information processing apparatus and method An information processing apparatus that processes a multiplexed stream including a frame having multiple slots, which is obtained by multiplexing multiple streams containing time information describing times is disclosed. The apparatus includes extracting means for... | 08/10/2010 |
| 7769055 | Method of transmitting MPEG streams over IP and corresponding device, receiving method and receiver The invention concerns a method of transmitting, via a sending device, a data stream made up of data packets, at least some of these packets including time references for synchronizing the clocks of the sender and the receiver. The method includes at least a correct... | 08/03/2010 |
| 7764714 | Crystal drift compensation in a mesh network The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various internat... | 07/27/2010 |
| 7733919 | Method and apparatus for processing transport stream packets to compensate for jitter Method and apparatus for processing transport stream packets received from a network for distribution to user terminals is described. In one embodiment, a pair of clock reference packets in the transport stream packets is identified. The pair of clock reference pack... | 06/08/2010 |
| 7720110 | Cycle synchronization between interconnected sub-networks A method to perform a cycle synchronization between interconnected sub-networks, in which a reference node connected to one of the sub-networks transmits a respective cycle time information to cycle masters of all other sub-networks at recurring time instants, and t... | 05/18/2010 |
